The AFL has banned the glove that Collingwood key forward Travis Cloke wore in his dramatic return to form.
The Magpies have taken the glove to the league, which has ruled it is not allowed under their guidelines.
The breach is not seen as serious and it is unclear whether Cloke will face any punishment.
Cloke kicked four goals in the upset win over GWS last weekend and took 12 marks – five of them contested.
It was his best performance this season and came after he struggled to hold his place in the senior team.
Cloke wore the glove to protect two swollen fingers on his right hand.
He first wore it the week before in the win over Carlton.
This is understood to be the first time for about a year that Cloke has worn a glove while playing.